Drilling-rig.



v A. c. ZIERATH.

DRILLING BIG.

APPLIOATION FILED MAY 25, 1909.

PatentedAug. 16,1910.

2 BHEETS-SHEET 1.

'A. G. ZIERATH.

DRILLING RIG.

nrmonmx FILED MAY 25, 1909.

Patented Aug. 16,1910.

2 SHEETS-SHEET 2.

'r oration.

AUGUSTUS C. ZIERA-Til; OF LON GBEACH. CALIFORNIA. I

- i V DRILLING-RIG.

spcificativn of Letters t- Patented Aug. 16, 1910.

Application filed May 25. 1909. Serial No. 498.364.

it is usual to provide walking beam mechanism at one side of the derrick, a bull \Yhcci at the other side for raising or lowering the tools and a calf wheel at the same side the walking beam mechanism for pulling the casing when required, a sand wheel being also provided at this side. In the present invention all of these instrninentalities are brought into a compact unitary structure at one s de of the derrick, thereby simplifying the construction, eliminating belting and also dispensing with any housing for the operating mechanism.

Further objects of the invention will appear hereinafter.

Accompanying drawings illustrate'tlm invention and referring thereto, l-igurc. 1 a side elevation of the derrick and drilling rig. Fig. 2 is a horizontal section on line m a2'-' in Fig. 1, part of the apparatus he.- ing broken away. Fig. 3 is a vertical section on line ai -so in Fig. t. Fig. -t is a vertical section on line w:/.: in Fig. 3. Fig. 5 is a vertical sectidn of the crank shaft mechanism.

1 designates the derrick which may he of usual construction and is provided with the base frame or sills 2 which extend latersured.

strains such as arise with the usual crank pins extending from one end of the main shaft. To provide. for adjustment of tin stroke ot' the. crank, the crank members 1! are preferably made with shanks ti! extending through transverse bores 13 in cross heads 1.4 on the respective shaft members S) and washers or distance pieces 15 are inlerposed between the cross head 14 and a shout der 16 of the crank member, the loner end of each shank 12 being screw threaded to receive. a fastening nut 17 and a lock nut; 18. By removing these nuts and transferring one or more of the washers 15 from a position between the. cross head 14 and the shoulder 10 to a position on the other side of the cross head between said cross head and the not 1?, the crank may be cori-espondingly shortened or by a reverse operation the crank may be lengthened. Any (lesiredmnnbe' of these washers may be used.

Means are provided for operating the crank shalt. members 9 at each side soas to give a balanced or equalized operation. for

this purpose a driving shaft 20 mounted inavoided and a steady smooth drive is inlhe driving shall 20 is operated from the counter shaft: 330 journaled in hearlugs on the side 01 the derrick l. and carryally therefrom and carry the operating:

mechanism hert fnat'ter described. The walk ing beam 3 pivoted at 4 on the samsonpost 5 is connected at one end to ,the temper cw (3 and at: the other end to the pitman 7, whose lower end is connected to the crank pin 8 of the, crank shaft 9. Said crank shaft is made in two parts journalcd in separate hearings or standards i at each side of the machine, said shaft members 5) hav ing crank portions 11 connected at their outer ends by the crank pin 8 so that the crank pin is supported and operated from each side. thereby eliminating all twisting in; a sprm ket. wheel 2,1 connected by a sprocket chain 332 with sprocket \vh cl III on the shaft 20. Said sprocket shalt IN) is uperated by a motor I51: mounted on the base i. and connected by sprocket wheel 36. spro ket chain It? and sprocket wheel 38 will: the'said shaft 3() Motor 33 may he an electric motor, gas engine or steam engine. The same inotor 33 also serves to operate the other devi es of the rig including the drum 4 for the standard rig. drum 4i for the hailing line and drum 42 for use with the rotary rig. 'lhc drums 4,0, 41 and 42 are mounted on a shalt 4-3 extending transversely of the derrick and supported on posts 4-4 so as to tnrzi independently of one. another. A count r shaft or jack shaft 30 mounted in hearings on said post 44 above the shaft 43'is driven from the motor 35 by sprocket win -cl S6.

, and goal-in all loosencss of transmission is sprocket chain 37 and sprocket wheel 38, and

said jack shaft carries two fast sprockets 50, 51, and a loose sprocket a clutch 53 being provided to clutch thevioose sprocket 52 to the jack shaft. Sprocket wheel 52 is connected by sprocket chain 54 with a sprocket wheel 55 on the bailing line drum 4-., sprocket wheels 50 and 51 are connected by sprocket chains 56, 57, respectively to the sprocket wheels 58, 59, loosely mounted on the lower shaft 43. Brakes 71, 72, 73, are provided for drums 40, 41, 42.

Clutches 60, 61, are provided for connectingor disconnecting the sprocket wheel 58 with the main drum 40 and for connecting the sprocket wheel 59 with the drum 42 for the rotary rig. vided at each end with a cat head or small winding drum 63, 64, for use in spndding. i

To adapt the rig for use as a combination rig the samsompost and walking beam are mounted to he movable out of the way when the rotary rig is in operation. For this purpose the Samson-post 5 is mounted on a supplementary base 66 which slides in a way or track formed by the guide rails 67 on the base 2, wheels 70 being provided to reduce the friction. A cat head 68 may be provided at each end of the driving shaft 20 to receive a line for drawing the samson-post frame 66 i'earwardly out-of the way when desired.

The operation is as follows: In spudding the spndding line is thrown over either of the cat heads 63, (i4, enough turns thereon being taken to provide a grip and the line being passed over a fall and attached to the standard rig line. The spudding is effected by intermittently pulling the free end of thc line to tighten the same on the cat head. .\t each tightening the cat. head winds up the line and then on release of the tension the line falls under the weight of the tool, etc.- The regular drilling operation is effected by rotation of the driving shaft 20 and driven shaft 9 from the motor 35 through the sprocket connections 37, 3'2 and 23, and the gearing wheels 24 in such manner as 'to give a smooth, steady, positive drive. For lifting the tools the standard rig drum from main drum 40 will be brought into use, the ma n line 75 being fastened around said drum; for lifting the case the same drum may be used. In sandbailing the drum 41 is used. When the g is to be used as a rotary, frame 66 with the walking beam and sanison-post is drawn out of the way by attaching a line to the said frame and throwing said line. over one of the cat heads, 68, on the driving shaft 20,

The jack shaft 45 is PIO-s taking sufficient turns thereon to grip 'the6 0 line to the shaft so that in the rotation of said shaft the line will be wound on the cat head and will draw the frame 66 away from the derrick, leaving the space within the derrick free for operation of the rotary rig.

having a base extending laterally therefrom. 70

walking licani mechanism supported on sai laterally extending base, a shaft journale; on the derrick adJacent to said lateral extension, :1 standard rig drum, and a hailing line drum mounted to rotate independently on said shaft, a counter shaft journaled above the first named shaft, independent sprocket chain connections from the said countershaft to the said drums, clutches in said connections, and means for driving said countershaft.

'2. drilling rig comprising a derrick having a base extending laterally therefrom, walking beam mechanism supported on said laterally extending base, a shaft jonrnalcd 5 l in the derrickadjacent to said lateral extension, a standard rig 'drum. and a bailin line'druin mounted to rotate independent y on said shaft, a counter-shaft journaled above the first named shaft, inde endent sprocket chain connections from t e said countershaft to the said drums, clutches in said connections, means fordriving said countershaft, and a motor and driving connections therefrom to the walking beam mechanism 5 and to the said countenshaft.

3. A drilling rig comprising a derrick having a base extending laterally therefrom, a

walking beam mechanism supported on said laterally extending base, a shaft journaled 0 in the derrick adjacent to said lateral extension, a standard rig drum, and a bailing-line drum mounted to rotate independently on said shaft, a counter-shaft jonrnaled above the first named shaft, iiidependent sprocket chain connections from the said counter shaft to the said drums. clutches in said connections, means for driving said countershaft, and cat-heads on the ends of the said counter-shaft. 1

In testimony whereof, I have hereunto set my hand at Los Angcles, California, this 17th day of May, 1909.

AUGUSTUS C. ZIERATH.

In presence of Airrmrn P. .KNIGHT, F mun L. A. GRAHAM. 

